Harrison Foster Williams (born March 7, 1996) is an American athlete and former U.S. Champion in the decathlon.

[4] In 2023, Williams set a new lifetime best of 8630 points to win the 2023 USA Outdoor Track and Field Championships and become U.S. Champion in the decathlon for the first time.

This score also put him 31st on the global all-time list and booked his place at the 2023 World Athletics Championships, where he finished 7th.

[7][8] Williams attended Memphis University School, where he competed in track & field.

United States at the 2019 World Athletics Championships